The seminar focused on a voice navigation stick designed for blind individuals, integrating GPS, GSM, and obstacle sensors to enhance independent navigation. It addresses the limitations of existing methods like blind canes and guide dogs, providing a more accurate and convenient solution for obstacle detection. The system aims to improve the safety and confidence of visually impaired users while highlighting its benefits and limitations.

1. The Oxford College of Engineering
Department of ISE.
Seminar on:
“Location Finding for Blind People
Using Voice Navigation Stick”
Presented By:
SANJANA V
1OX12IS115

2. AGENDA
 INTRODUCTION
 PROBLEM STATEMENT
 EXISTING METHODS
 PROPOSED SYSTEM
 BLOCK DIAGRAM
 BENEFITS & LIMITATIONS
 REFERENCES

3. INTRODUCTION
 The system facilitates blind people to navigate independently
without any external help by means of talkative assistance.
 The system is linked with a GSM-GPS module to pin-point the
location of the blind person and to establish a two way
communication path in a wireless fashion.
 The system is equipped with obstacle sensors such as
ULTRASONIC and IR sensor to alert the blind person.

4. PROBLEM STATEMENT
 Over 285 million people are visually impaired worldwide: 39
million of them being blind and 246 million have low vision.
 About 90% of the world’s visually impaired live in developing
countries.
 The blind traveller should depend on any other guide like blind
cane, people information, trained dogs, etc.

5. Existing Methods &
Disadvantages
 Blind Cane
• Awkwardness.
• Recognition of obstacles up to knee level.
• Does not protect from obstacles at torso and face level.
• Prone to injuries.
 Trained Guide Dogs
• 1% usage.
• Expensive to Train Dogs ( $40k in USA).
• Training period on an average 6 months.
• Difficulty in dog up-keeping costs and lifestyle changes.
 Human Guide
• Dependency.
• Feeling of being a burden.

6. PROPOSED SYSTEM
The main objective of the voice navigation stick are:
1. GPS
2. GSM
3. Obstacle Sensors:
 Ultrasonic Sensor
 IR Sensor

7. GPS & GSM
 GPS: Features the 16 channels. This completely enabled GPS
receiver provides high position, velocity and time accuracy
performances as well as high sensitivity and tracking
capabilities.
 GSM: (Global System for Mobile communication) is a digital
mobile telephony system. GSM uses a variation of time
division multiple access (TDMA). GSM digitizes and
compresses data, then sends it down a channel with two other
streams of user data, each in its own time slot.
GPS

8. ULTRASONIC
SENSOR
 Ultrasonic sensors are used to
measure distances between the
obstacle/object and sensor.
 Consists of ultrasonic
transmitter and receiver.
 Transmitter transmits signal in
one direction, transmitted
signal is reflected back by
obstacle and received by
receiver.
-Working of Ultrasonic Sensor

9. BLOCK DIAGRAM

10. BENEFITS & LIMITATION
Benefits Limitations
Accurate detection of obstacles of
left, right and front side.
Recognition of objects.
Very convenient for the users-
Independency and Confidence.
Not water proof.
Detection of ground level to head
level.
Low cost.(Rs. 3000 approx.)
Very low power consumption.
High Performance.
Auto detection and auto alarming.

11. REFERENCES
 S. Sai Santhosh, T. Sasiprabha, R. Jeberson,. "BLI – NAV Embedded
Navigation System for Blind People." IEEE, 277-282, 2010:.
 A. R. García, R. Fonseca. A. Durán. "Electronic long cane for locomotion
improving on visual impaired people." IEEE, pp.58-61, 2011
 Alshbatat, Abdel Ilah Nour. "Automated Mobility and Orientation System for
Blind or Partially." INTERNATIONAL JOURNAL ON SMART SENSING
AND INTELLIGENT SYSTEMS, 568-582, 2013.
 Mahdi Safaa A., Muhsin Asaad H. and Al-Mosawi Ali I. "Using Ultrasonic
Sensor for Blind and Deaf persons Combines Voice." International Science
Congress Association, 50-52, 2012
 Harshad Girish Lele, Viten Vilas Lonkar, Varun Vasant Marathe, Mrunmayi
Mohan Modak. "electronic path guidance for visually impaired people." The
International Journal Of Engineering And Science (IJES), 09-14, 2013.
 K. Steed-Terry, “Integrating GIS and the Global Positioning System,” 2nd ed.
ESRI inc. pp.1–12, 2001.
 A. Hub and B. Schmitz, “Addition of RFID-Based Initialization and Object
Recognition to the Navigation System TANIA,” Visualization and Interactive
Systems Group, Stuttgart, 2009.

12. QUESTIONS

13. THANK YOU